CB and variants may refer to: Places CB postcode area, British post code for eastern England served by the Cambridge postal sorting office Cambodia (LOC MARC code, obsolete FIPS Pub 10-4 country co
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68662f4393a3a6d996130207b6d9c9fd72b6c75180a10055096da93b3518317. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59d54d32-d80d-4c20-8c0c-0b8da916e24b.json and https://artists.proofprofile.net/proofs/artist/59d54d32-d80d-4c20-8c0c-0b8da916e24b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52bc24c0e32d5ac93789ea8b2cb29e487f9b3b8f7be1f736634334bd4a456c4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453ec329ae20b10e0cfee719b6bf7455d5a1e0c8e0d18348b0d3cba0250bd6d5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ade134a18585c52d6c37504e8f060a1483e96849cea51b90436c0706cdcbe. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987c9e28b6d9f3352157408c487ee7dea79dccfa900a3ff1d987161f0f5a29bf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2699acc1d448964b8c6f1f3cd9d1e6ba57e8a24ae28b4c9b8ca9cb974e2b2a10. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92fe7a2ae92a21d04464c829576b1e7bcaa708eb554301277bc3b574f524885. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e60711dd77941da135660527800d449b2968bf4ce0886be257c4b51b2df2da9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c32758c930cbfb1e31b6c806beeedcbdf8c5593ef8ff23d427d701a4e856f93. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca197d60765c37ec0dc32301708411970511818648264afd26676bb33266851. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6691c93670b89014b4795b0976e3833a323b1b236a8372ae2e3a3f014aff263f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65697c8f7621730d84514c80e16bb53b37f1c4ea2be424c1137f903bbce21429. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dd57208316e21b7c204d52b96edc14cba6554b83eb9ce5f9e629485a2bf425. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6005a781e254681d1c6c04ca504956d11545b9976d627f79006c807786891655. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2636db77218e67554086cc6e96393ecf0c67edcf04768586dd8eaf8b29579c8f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92286826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4002a8fede3fff137f195fc922440cc90b1a03ef20d60253ab25fd33dd1e32. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81942930.
Bendover (feat. Almighty Suspect & AZChike)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a60db31f774df1c51375d5c4ffff796cba3d9fa068f4bfa4defd00e5cfa5fc. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1270945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627b817f5c31ff43a66bf8c6f617e4ee8af0cd92b6757d84cfdf39feb36670d9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1368381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a39314d23f90cb94f0aa8bfefea2084772a4004a93adf364769e19f447566c9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42016650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9833bdd690dbf6b888a5b48798ac2646c46a696caaeccfb8c7f526faf71df59. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1901249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322619d0731ad0c0dea0d430649f3820912ab7aa1243524e02b027b0201b3e6d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1901148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e1f7aeaafdb23bc2e322c1b22cbea3f88e36284ca6d657930b5b07a7b860c. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1901150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a28ae8cb5d237384277dbba9de201ea12112b20f56431b8933136541a2083. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1901151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355c1b40a885378484b24e087a96139e9382363f62e4bb832eba18905192313b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1901152.
Lost in My Jewelry (feat. CB & Mari Taylor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9caab10890d6023c96db19b63e4b516929d0f8360edc055a223fef428e2c871. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1364106.